Method for purifying phosphoric acid

Details Method for purifying phosphoric acid Method for purifying phosphoric acid

1974-01-31

1976-07-20

Vertig, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2516

Patent

active

039707415

ABSTRACT:
A method for purifying phosphoric acid obtained with sulfuric acid acting on natural phosphates, comprises extracting the phosphoric acid with a mixed solvent formed essentially by 95% to 50% by volume of an ether containing 5 to 7 carbon atoms, and by 5% to 50% by volume of at least one of the esters resulting from the reaction of the phosphoric acid with alcohols having 3 to 5 carbon atoms.

REFERENCES:
patent: 3318661 (1967-05-01), Schallert et al.
patent: 3367738 (1968-02-01), Schallert et al.
patent: 3573005 (1971-03-01), Baniel et al.
patent: 3607029 (1971-09-01), Goret et al.

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